Segment 1: Does your DNA make you who you are? Senator Elizabeth Warren recently took a DNA test proving a percentage of her heritage is Native American. But how much should DNA shape your identity? We visit with authors who have voiced research and opinions on this topic as well as callers from our community. Wendy Roth , sociology professor, University of British Columbia Brandon Scott , executive editor, Cherokee Phoenix Holly Edgell , author, Who gets to say who you are? Segment 2, beginning